Scientists are experimenting with a kind of gun that may
Chapter , Problem 6(choose chapter or problem)
Scientists are experimenting with a kind of gun that may eventually be used to fi re payloads directly into orbit. In one test, this gun accelerates a 5.0-kg projectile from rest to a speed of 4.0 3 103 m/s. The net force accelerating the projectile is 4.9 3 105 N. How much time is required for the projectile to come up to speed?
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